1157969 has 2 divisors, whose sum is σ = 1157970. Its totient is φ = 1157968.

The previous prime is 1157953. The next prime is 1157977. The reversal of 1157969 is 9697511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1113025 + 44944 = 1055^2 + 212^2 .

It is an emirp because it is prime and its reverse (9697511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1157969 - 2⁴ = 1157953 is a prime.

It is a super-2 number, since 2×1157969² = 2681784409922, which contains 22 as substring.

It is a Chen prime.

It is equal to p₈₉₈₈₅ and since 1157969 and 89885 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1157929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578984 + 578985.

It is an arithmetic number, because the mean of its divisors is an integer number (578985).

2^1157969 is an apocalyptic number.

It is an amenable number.

1157969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157969 is an equidigital number, since it uses as much as digits as its factorization.

1157969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 38.

The square root of 1157969 is about 1076.0896802776. The cubic root of 1157969 is about 105.0103995746.

The spelling of 1157969 in words is "one million, one hundred fifty-seven thousand, nine hundred sixty-nine".